Hydra Cluster

{{Short description|Galaxy cluster in the constellation Hydra}} {{hatnote|Not to be confused with the Hydra–Centaurus Supercluster}} {{Use dmy dates|date=April 2019}}

{{Infobox galaxy cluster | name = Hydra Cluster | image = Hydra I galaxy cluster.jpg | caption = Central region of Abell 1060 (Hydra Cluster) with legacy surveys. The bright stars are HD 92036 (middle left) and HD 91964 (bottom) | constellation = Hydra | epoch = J2000 | ra = {{RA|10|36|42.7100}}<ref name="NED">{{cite web | title=Results for object Hydra CLUSTER (Abell 1060) | work=NASA/IPAC Extragalactic Database | url=https://ned.ipac.caltech.edu/byname?objname=Abell+1060&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1 | accessdate=8 March 2026}}</ref> | dec = {{DEC|-27|31|42.900}}<ref name="NED"/> | redshift = 0.012389 ± 0.000123<ref name="NED"/> | distance = {{convert|58.3|Mpc|Mly|1|abbr=on|lk=on}} {{hub|0.705}} | richness = 1<ref name="ACO">{{cite journal | last1 = Abell | first1 = George O. | authorlink1 = George O. Abell | last2 = Corwin | first2 = Harold G. Jr. | last3 = Olowin | first3 = Ronald P. |date=May 1989 | title = A catalog of rich clusters of galaxies | journal = Astrophysical Journal Supplement Series | volume = 70 | issue = May 1989 | pages = 1–138 | format = PDF | issn = 0067-0049 | bibcode = 1989ApJS...70....1A | doi = 10.1086/191333 | accessdate = 12 March 2012 | url = http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1989ApJS...70....1A&page_ind=0&epage_ind=137&type=PRINTER&data_type=PDF_HIGH&email=&emailsize=500&emailsplit=YES&send=GET&verified=YES | doi-access = free }}</ref> | bmtype = III<ref name="ACO"/> | member_no = 157<ref name="noao">{{cite web | title=National Optical Astronomy Observatory | work=Galaxies | url=http://www.noao.edu/image_gallery/html/im0658.html | accessdate=19 July 2007 | archive-date=15 March 2016 | archive-url=https://web.archive.org/web/20160315035450/http://noao.edu/image_gallery/html/im0658.html | url-status=dead }}</ref> | flux = 6.1{{e|-11}} erg s<sup>−1</sup> cm<sup>−2</sup> (0.5–2 keV)<ref name="NED"/> | other_names = Abell 1060 }}

The '''Hydra Cluster''' (or '''Abell 1060''') is a galaxy cluster that contains 157 bright galaxies, appearing in the constellation Hydra.<ref>Wehner and Harris, p.1</ref> The cluster spans about ten million light-years and has an unusually high proportion of dark matter.<ref>{{Cite APOD |date=16 April 2001 |title=The Hydra Cluster of Galaxies }}</ref> The cluster is part of the Hydra–Centaurus Supercluster located 158 million light-years from Earth. The cluster's largest galaxies are elliptical galaxies NGC 3309 and NGC 3311 and the spiral galaxy NGC 3312 all having a diameter of about 150,000 light-years.<ref>[http://www.atlasoftheuniverse.com/superc/hya.html ''The Hydra Supercluster''] An Atlas of the Universe.com</ref> In spite of a nearly circular appearance on the sky, there is evidence in the galaxy velocities for a clumpy, three-dimensional distribution.<ref> {{Cite journal | doi = 10.1086/166902 | last = Fitchett | first = Michael | last2 = Merritt | first2 = David | author2-link = David Merritt | title = Dynamics of the Hydra I Galaxy Cluster | journal = The Astrophysical Journal |date=December 1988 | volume = 335 | pages = 18–34 | bibcode = 1988ApJ...335...18F| doi-access = free }}</ref>

thumb|left|upright=2|A map of Hydra Cluster {{clear}} ==References== {{reflist}}

==Related reading== * Wehner, Elizabeth M. H. and Harris, William E. (10 August 2006) [https://arxiv.org/abs/0708.1514 ''UCD candidates in the Hydra Cluster'' ]. ArXiv.org. ApL Letters * {{WikiSky|name=The Hydra Cluster|z=9}}

Category:Hydra Cluster Category:Galaxy clusters 1060 Category:Abell richness class 1 Category:Hydra-Centaurus Supercluster